Section 03 ENGINE
Sub-Section 02 (LEAK TEST)
03-02-2
717 ENGINES — REAR VIEW
1. Engine drain hose blocked with a hose pincher
717 ENGINES — FRONT VIEW
1. Loop hose and use clamps
2. Use 2 washers with exhaust manifold stud
3. Hose with adapter and nipple
787 ENGINE
1. Loop hose and use clamps
2. Hose with clamps. Plug end with a screw
3. Block engine drain hose with a hose pincher
4. Use 2 washers with exhaust manifold stud
NOTE:
Water is not required for testing.
Activate pump and pressurize engine cooling sys-
tem to 34 kPa (5 PSI).
Wait 3 minutes and check if pressure drops; if so,
verify all testing components.
– If kit components are not leaking and pressure
drops, verify all external jointed surfaces, tem-
perature sensor and the O-ring between the
spark plug area and the engine cylinder head
cover. If none of these components are leaking,
there is an internal leak and it can be detected
with Bottom End and Top End testing.
Bottom End and Top End
Remove the carburetor(s) and gasket(s). Make
sure the surface of the intake manifold (717 en-
gines) or rotary valve cover (787 engine) are clean.
NOTE:
With the BN-38 carburetor, intake mani-
fold must be removed first to withdraw carbure-
tor; Then, reinstall intake manifold to proceed
with testing.
Install the intake plate(s)
no. 3
with fasteners
from the kit and tighten adequately.
On engines with the RAVE system, remove the
RAVE valves and gaskets.
F01B2UB
1
F01B2VA
2
3
1
F01B2WA
1
3
2
4
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